Komatsu HM400-5, Operation & Maintenance Manual

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2.
Check if the indicator of the engine coolant temperature
gauge is over position (A).
When it is over position (A), the warm-up operation is com-
pleted.
If the indicator does not move from position (A), perform
the warm-up operation further
3.
After finishing the warm-up operation, check that the ma-
chine monitor is normal.
If any of them is abnormal, ask your Komatsu distributor
for inspection and repair.
4.
Check that the steering operation is normal, the lamps light up and go out normally, the horn sounds, and
the exhaust gas color, sound, and vibration are normal.
If any of them is abnormal, ask your Komatsu distributor for inspection and repair.
METHOD FOR STOPPING ENGINE
NOTICE
• If the engine is suddenly stopped without allowing it to cool down, there is danger that the life of the
engine parts will be shortened, so never stop the engine suddenly except in emergency. Allow the
engine to cool down gradually before stopping it.
• Always lower the dump body and set the dump lever to “FLOAT” position, then stop the engine.
1.
Set the gear shift lever to NEUTRAL position (N), and set the parking brake switch to “PARKING” position.
2.
Lower the dump body and set the dump lever to “FLOAT” position.
3.
Run the engine at low idle for approximately 5 minutes to cool it down gradually.
4.
Turn the key in starting switch (1) to OFF position (A).
The engine will stop.
5.
Remove the key from starting switch (1).
METHOD FOR CHECKING AFTER STOPPING ENGINE
1.
Walk around the machine and check the work equipment, machine exterior, and undercarriage, also check
for any leakage of oil or coolant. If any problems are found, repair them.
2.
Fill the fuel tank.
3.
Check the engine compartment for paper and debris. Clean out any paper and debris to avoid a fire hazard.
4.
Remove any mud affixed to the undercarriage.
OPERATION MACHINE OPERATIONS AND CONTROLS
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